package com.example.experiment_2java.util;

import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTCreator;
import com.auth0.jwt.algorithms.Algorithm;
import com.auth0.jwt.interfaces.DecodedJWT;

import java.util.Calendar;
import java.util.Map;

/**
 * @Description:JWT工具类
 * @Author：Jukomu
 * @Package：org.csu.mypetstore.utils
 * @Project：MyPetStore-SSM
 * @name：JWTUtils
 * @Date：2024/4/1 1:46
 * @Filename：JWTUtils
 */
public class JWTUtils {


    private static final String SING = "!Q@W3e4r%T^Y";

    /**
     * 生成token  header.payload.sing
     */
    public static String getToken(Map<String, String> map) {

        Calendar instance = Calendar.getInstance();
        instance.add(Calendar.DATE, 7);//默认7天过期

        //创建jwt builder
        JWTCreator.Builder builder = JWT.create();

        //payload
        map.forEach(builder::withClaim);

        String token = builder.withExpiresAt(instance.getTime())//指定令牌过期时间
                .sign(Algorithm.HMAC256(SING));//sign
        return token;
    }

    /**
     * 验证token 合法性
     */
    public static DecodedJWT verify(String token) {
        return JWT.require(Algorithm.HMAC256(SING)).build().verify(token);
    }
}
